Surface plasmons at single nanoholes in Au-films
Materials Science
2009-11-10 v1
Abstract
The generation of surface plasmon polaritons (SPP's) at isolated nanoholes in 100 nm thick Au films is studied using near-field scanning optical microscopy (NSOM). Finite-difference time-domain calculations, some explicitly including a model of the NSOM tip, are used to interpret the results. We find the holes act as point-like sources of SPP's and demonstrate that interference between SPP's and a directly transmitted wave allows for determination of the wavelength, phase, and decay length of the SPP. The near-field intensity patterns can be manipulated by varying the angle and polarization of the incident beam.
Keywords
Cite
@article{arxiv.cond-mat/0401390,
title = {Surface plasmons at single nanoholes in Au-films},
author = {L. Yin and V. K. Vlasko-Vlasov and A. Rydh and J. Pearson and U. Welp and S. -H. Chang and S. K. Gray and G. C. Schatz and D. E. Brown and C. W. Kimball},
journal= {arXiv preprint arXiv:cond-mat/0401390},
year = {2009}
}
Comments
12 pages, 3 figures